Investments in Partnerships - Summary of Share of Equity in (Loss) Income of Partnerships (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Equity Method Investments And Joint Ventures [Abstract]
Real estate revenue	$ 24,900	$ 27,200
Expenses:
Property operating and other expenses	(13,739)	(11,229)
Interest expense	(10,704)	(6,360)
Depreciation and amortization	(6,930)	(7,617)
Total expenses	(31,373)	(25,206)
Net (loss) income	(6,473)	1,994
Less: Partners’ share	3,096	(1,178)
PREIT’s share	(3,377)	816
Amortization of excess investment	(56)	3
Equity in (loss) income of partnerships	$ (3,433)	$ 819